Her Dangerous Woman Tour started in February in the US and played 37 shows in North America and Canada - the biggest being to 26,000 people a night for two nights at Madison Square Garden in New York. In the US she played to an average of 12,000 people each night.
Her next show is scheduled for London's 20,000 capacity 02 Arena on Thursday and Friday.
Grande's itinerary, as it stands, then includes 25 shows in Europe, Latin America, Asia, Australia and New Zealand.
It would be Grande's first Australisian tour, although she visited for a promotional tour in 2014.
Her Australian promoter Live Nation said today in a statement "We are deeply saddened by this senseless tragedy and our hearts and thoughts are with those impacted by this devastating incident."
Grande, who turns 24 next month, got her big break in the kids TV show Victorious when she was 16. She then launched a music career.
Her second album, 2014's My Everything and last year's Dangerous Woman both made No. 1 while she has had nine Top 20 singles including Problem, Break Free,Bang Bang, Love Me Harder, One Last Time, Focus, Into You and Side By Side.
Her fanbase - who call themselves Arianators - are predominantly young females, with many parents buying tickets to accompany their children to her concerts.